CSHARP-5252: Fix possible null reference (#1433)

adelinowona · web-flow · commit 2a0fd607a6cc · 2024-08-30T11:33:42.000-04:00
diff --git a/src/MongoDB.Driver/Core/Clusters/DnsMonitor.cs b/src/MongoDB.Driver/Core/Clusters/DnsMonitor.cs
@@ -115,7 +115,7 @@ private TimeSpan ComputeRescanDelay(List<SrvRecord> srvRecords)
         {
             var delay = TimeSpan.FromSeconds(60);
 
-            if (srvRecords.Count > 0)
+            if (srvRecords?.Count > 0)
             {
                 var minTimeToLive = srvRecords.Select(s => s.TimeToLive).Min();
                 if (minTimeToLive > delay)

Original file line number	Diff line number	Diff line change
`@@ -115,7 +115,7 @@ private TimeSpan ComputeRescanDelay(List<SrvRecord> srvRecords)`
`115`	`115`	`{`
`116`	`116`	`var delay = TimeSpan.FromSeconds(60);`
`117`	`117`
`118`		`- if (srvRecords.Count > 0)`
	`118`	`+ if (srvRecords?.Count > 0)`
`119`	`119`	`{`
`120`	`120`	`var minTimeToLive = srvRecords.Select(s => s.TimeToLive).Min();`
`121`	`121`	`if (minTimeToLive > delay)`